Lock



MANIER.

LOCK.

APPLICATION FILED AUG.23| ISIS.

Patented Jan. 10, 1922.

IN VEN TOR.

w/TNESS r A ATTORNEYS.

Pateted Jan. 10, 1922.

2 sHI-:Is-SIII-:Is 2.

R. R S.` 7 R m 5,5 mn W P I. Y .IMT ///M// E. RATNER.

EZRA lRA'll'll,A OF SAN FRANCISCO, CALIFORNIA;

LOCK.

Specification of Letters Patent.

Patented J an. 10, 19,22.

Application led August 23,V 1919. VSerial No. 319,472.

T0 all ici/10m it may concer/lt:

Be it known that I, EZRA RATNER, a citizen of the United States, and a resident of the city and county of San Francisco and State of California, have invented a new and useful Lock, of which the following is a specification.

My invention relates to locks, and particularly to locks used in connection with a hasp.

An object of the invention is to provide a padlock of improved construction. Another object of the invention is to provide a padlock in which means is provided for trapping a wrong key and preventing its withdrawal from the lock without breaking.

The invention possesses other features of advantage, some of which, with the foregoing, will be set forth in the following description of the preferred form of my invention which is illustrated in the drawings accompanying and forming part of the specification. It is to be understood that I do not limit myself to the showing made by the said drawings and description, as I may adopt variations of the preferred form within the scope of my invention as set forth in the claims. i' K Referring to the drawings:

Figure 1 is an elevation of the lock and hasp applied to a door. Figure 2 is a vertical sectional view through the lockshcwing the bolt withdrawn from the locking head. Figure 3 is a similar section showing the bolt engaged in thc locking head. Figure 4 is a horizontal sectional view taken on the line 4-4 of Figure 2. Figure 5 is an elevation of one of the spacing plates. Figure 6 is a perspective view of the locking head. Figure 7 is an elevation of the bolt.v Figure 8 is a side view of the padlock, part of the casing wall being broken away. Figure 9 is an elevation of a key for the lock.

In general terms the lock of my invention comprises a casing in which the mechanism of the lock is disposed, a headed stud adapted to be fixed in the wall and to which the casing is adapted to be releasably secured, a hasp pivotally mounted on the door, and a locking head adapted to engage the hasp and be locked into the casing.

Slidably arranged in the casing 2 is the bolt plate 3 of the lock formed as shown in Figure 7. The bolt plate is provided with slots or recesses 4 and 5 adapting it for engagement with the fixed studs 7 and 8 respectively which determine the position of the bolt 6 formed integral with the bolt plate. Pivotally mounted on the stud 9 and adjacent the side of the bolt plate are a plurality of tumblers 11 alternated with spacing plates 12 lying between the studs 8 and 14 and engaged over the stud 9. The spacing plates do not move, their function being to space'the tumblers and present immovable lower edges to which the key must be fitted before it can be turned in the lock. The spacing plates are also provided with shoulders 13 which act as stops to limit the movement of the bolt plate to the right, as viewed in Figures 2 and 3; the movement tothe left being limited by the stud 7. Movement of the bolt plate is additionally controlled by engagement of the stud 14 fixed thereon in recesses 16v formed in the tumblers. Each tumbler is Aprovided with a spring 17 for re'- siliently holding it against movement by the key 18, the bit of which is provided with suitable slots or kerfs to adapt it topass the bottom edges of the spacing plates and to raise the tumblers freev from the stud 14, so that engagement of the bit with the bolt plate will m'ove the latter in the usual manner. A tooth 19 is provided on each tumbler, and is so formed that rwhile a wrong key may` possibly be turned to allow the `bit to enter the recess 21, suchl a key cannot be turned outv of the lockwithout breaking the bit. A trap is thus formed for catching a wrong key surreptitiously placed in the lock.

A hasp 22, pivoted on the pin 23 to the fixed member 24 is associated with the lock,

and a locking head is provided for rcleasably securing the hasp and lock together. The locking head or dog comprises a shaft 26 preferably of square cross section, and having opposite edges removed to provide shoulders 27 which limit the penetration of the sha-ft into the casing 2. The shape of that portion of the shaft which enters the casing is therefore such that the shaft can be .inserted only in such position that the aperture 28 therein is alined with the bolt G, and never transversely thereto. Movement of the bolt plate engages in or disengages the bolt from the apertured shaft 26 and thereby locks the locking head in the casing or permits it to be withdrawn, as the case may be. A rivet 29 which with rivets 31 secure the cover 32 on the casing engages the top edge of the bolt and prevents any upward displacement thereof. On the upper end of the shaft 26 is a head 33 which prevents the disengagement of the hasp 22. The hasp and other part-s `are so proportioned that when the hasp is locked tothe casing, there is a snugtit between the head 33, hasp and vtop of casing so that the inserting of a prying tool between the parts is prevented.

It desired the lock may be permanently secured to the Wall 36,'but preferably means are provided :For releasably attaching the lock to the wall. A stud 37 provided with a rectangular elongated head is permanently fixed by any suitable `means in the Wall. The lock easing is provided with an aperture 38 of the same shape as the head and so disposed that the lock easing 'can be pushed over the stud and then turned through an arc to upright position engaging the stud head with the easing. Owing to the long Contact of the hasp and casing the casing can not be turned when the hasp is engaged therewith, and hence in the looked position ol the hasp,.the.casing is not releasable from thestud y e To use the Vpadlock it is slipped on the stud and turned to engage it therewith, then the hasp 1s swung into engagement, the locking head inserted and the key turned to engage the bolt 6V With the locking head shaft. Re-

versinO be` removed. Y

'It Willl be noted that the locking head is .0" these Vsteps permits the padlock to fixed for 'rotation on the shaft 26, so Vthat it is practically impossible to twist the dog by applying a WrenchV or similar tool tothe ead. Y ,v f I- claim: i

lfn a ,device for locking .two members together,.a casing adapted to be secured to one ofsaid members, a hasp pivoted to the other of said members, a separable locking sith day oi August, 1919;

head for relea'sably securing the hasp to said casing, a bolt in the casing for locking said locking head thereto, and tumblers for cone trolling the operation or said bolt.

2. In a device for locking two members together, a casing adapted to be removably secured to one of said members, a hasp pivoted to the other of said members, a separable looking head for securing the hasp to said casing whereby rotary movement of said casing is prevented, a bolt in the -casing Jfor locking. said locking head thereto, tumblers for controlling thel operation of said bolt, and means releasable by rotation of said casing for securing ythe casing to its associated member.

3. In a lock, a bolt, a tumbler for controlling the operation of said bolt, a key for manipulating said tumbler, and means formed in said tumbler for trapping and locking a Wrongkey against rotation.

4. In a device for locking two members together, a casing, av separable locking element adapted to engage in said casing, a bolt in the easing for locking said element thereto, and a head rotatably mounted on said locking element.

5. In' a lock, a bolt, a tumbler forcontrolling the operation of said bolt, a key for nipulating said tumbler, one edge of said formed'so as to prevent the Withdrawal of a `Wrong bit engaged in saidrecess. Y In testimony whereof, I have hereunto set my hand at San Francisco, California, this EZRA RA'INERV ln presence of,k

' JAB. GARDNER, H. S. HENsoN. 

